MOHR: The TDR Experts!

Using TDR Technology to Solve Your Problems

For more than 35 years, we've provided our customers with innovative sensor technologies and dependable engineering consulting expertise. We make, sell, and support the world's best portable metallic TDRs. If you have a testing or trouble shooting requirement for cabling issues, we can help.

We also develop TDR technology for other test and measurement situations, including liquid level measurement and measuring steam quality and other substances in extreme temperature and pressure environments.

CT100B TDR Cable Analyzer
High-Resolution TDR with Frequency-Domain Analysis!

CT100/CT100B TDR Cable Analyzer The CT100B* TDR Cable Analyzer is the industry's highest-resolution portable TDR, ideal for precision testing of all types of coaxial, twisted-pair, and multiconductor cables and connectors. The CT100B is the only metallic cable TDR with frequency-domain analysis tools including Return Loss (S11), Cable Loss (S21), and Smith charts.
The CT100B is the only portable instrument exceeding all TDR performance specifications of the popular Tektronix® 1502, 1502B, and 1502C TDRs. See comparison.

CT100B TDR Specifications

  • 20-80% risetime less than 100 ps
  • Up to 5 GHz test bandwidth
  • 500 Hz framerate for detecting transient faults
  • 0.76 ps (~25 µm or 0.003 in) cursor resolution
  • 16-bit impedance measurements

CT100HF** TDR Specifications

  • 20-80% risetime less than 80 ps
  • Up to 8 GHz test bandwidth

Key Features

  • Rugged, lightweight, portable
  • Bright color screen, long battery life
  • 2+ GB storage for saving traces and configurations
  • USB, 10/100 Ethernet PC connectivity
  • USB keyboard, thumbdrive, barcode reader

*CT100B and CT100HF are the latest models in the CT100-series of TDRs from MOHR.
**CT100HF is a higher performing laboratory instrument than the CT100B, but its electronic circuitry is more sensitive to electrical overload.

Click here for more information about MOHR TDRs.



Precision BNC Adapter Kit photo

Our Precision BNC Adapter Kit offers direct high-bandwidth coupling for testing most coaxial cables and interconnects: BNC-BNC, N-N, SMA-SMA, BNC-N, SMA-BNC, SMA-N, and SMA-TNC. The kit comes in a rugged plastic case.

Pin and Socket Probe Kit photo

The CT100-AK-PSP Pin and Socket Probe Kit is the industry's only impedance matched pin and socket probe kit designed specifically for use with a high-resolution TDR. The kit components interface to a wide variety of military and commercial multi-conductor connector types. The minimal impedance change through the CT100-AK-PSP connectors preserves the ability to detect small flaws in the cable being tested.

This custom designed Pelican™ hard case gives your instrument the utmost environmental protection. Replaces the standard soft-sided carrying case.

Our Impedance Matching Adapter Kit is for specialized applications requiring precision impedance matching to the cable or device-under-test (DUT). The kit contains adapters for 75, 93 and 125 Ohm connections.


See the complete list of adapters and other accessories for the CT100 series of TDRs.


MOHR Oil Field Instrumentation

Real-Time Measurement of Drilling Fluids and Production Flow Streams

MOHR Oil Field Drilling Mud System measurement probes provide real-time measurement of the oil/water ratios of drilling mud, along with the density and flow rate.

MOHR Oil Field Flow System measurement system provides real-time measurement of the oil, water and gas components of production flow streams, along with the flow rate.

MOHR Oil Field Wet Gas System measurement system provides real-time measurement of the wet gas component of production flow streams, along with the flow rate.

The MOHR systems are rugged, field reliable solutions that are easily integrated into any oil field operation. The systems do not require calibration in the field. The sensors require minimal maintenance.


MDT Series Automated Materials Testers

  • Fruit penetrometers and texture analyzers give accurate, repeatable results.
  • Tests interior portion of fruit as well as outer regions.
  • Constant-rate, Creep, and Crispness testing combine for the Quality Factor
  • Saves 50% or more of the time you spend testing.
  • Generates automated reports.
  • Also used for general materials testing.
MOHR EFP-IL SFPI System for Spent Fuel Pool Level Instrumentation

EFP-IL SFPI System for Spent Fuel Pool Level Instrumentation

  • Panel-mount EFP-IL and portable EFP-HL signal processors.
  • Meets all NRC Order EA-12-051 requirements for Spent Fuel Pool Instrumentation (SFPI).
  • Precision remote water level measurement up to 1000 ft. from the pool.
  • Accurate in boiling / frothing environments.
  • Long life at elevated temperatures and pressures.


Please contact us to participate in one of our regularly scheduled (typically the second Wednesday of the month) training sessions held at MOHR's facility in Richland, WA.